JP2019138134A - Screen and screen device - Google Patents

Abstract

To provide a screen and screen device, capable of reducing a lamination thickness in the case of the screen being wound in a roll shape.SOLUTION: A screen 10 is formed by weaving threads of warp 24 and threads of weft 22 and is to be wound in a roll shape. The screen 10 has one face 10a where weaving is performed in a state in which a thread of the weft 22 strides across a plurality of threads of the warp 24 and the other face 10b where weaving is performed in a state in which a thread of the warp 24 strides across a plurality of threads of the weft 22, which can reduce a lamination thickness in the case of the screen being wound in the roll shape.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a screen and a screen device used as a sunshade or a screen door of a building.

  Screens that can be shaded or blindfolded are sometimes installed on windows and terraces of buildings such as houses and stores. As this type of screen, there is a configuration in which warp and weft are plain woven (see, for example, Patent Document 1).

JP 2014-224374 A

  Usually, the screen as described above is wound around a roll in a main body box provided at the upper part of the window so as to be wound up and sent out. For this reason, when the laminated thickness of the screen wound up by the roll becomes thick, it is necessary to enlarge a main body box. That is, since the warp and the weft are plain woven in the screen of Patent Document 1, the upper layer and the lower layer weave (intersection) overlap each other when wound on a roll to increase the lamination thickness. Such a problem can also occur in a screen for other uses, such as a roll screen door. Furthermore, even for screen doors that have a net fixed to a normal frame that is not a roll screen door, the net is rolled and stored and transported in the manufacturing process. There is a desire to reduce it.

  The present invention has been made in consideration of the above-described problems of the prior art, and an object of the present invention is to provide a screen and a screen device capable of reducing the laminated thickness when wound in a roll shape.

  The screen according to the present invention is a screen formed by weaving warps and wefts and wound in a roll shape. On one side, the wefts are woven in a state of straddling a plurality of warps, and the other side Then, the warp is woven in a state of straddling a plurality of the wefts.

  According to the present invention, it is possible to reduce the laminated thickness of the screen when wound in a roll shape.

It is a side view which shows typically the state which installed the screen apparatus using the screen which concerns on one Embodiment of this invention in the building. 2A is a schematic view of the screen viewed from one side, and FIG. 2B is a schematic view of the screen viewed from the other side. FIG. 3A is a schematic view of a screen having a configuration with auxiliary wefts viewed from one side, and FIG. 3B is a schematic view of a screen with a configuration of auxiliary wefts viewed from the other side. . It is a schematic diagram of the cross-sectional shape which cut | disconnected the screen shown in FIG. 3 in the direction orthogonal to the longitudinal direction of a warp. It is the schematic diagram which looked at the screen of the structure which provided another auxiliary weft from the other surface.

  Hereinafter, the screen according to the present invention will be described in detail with reference to the accompanying drawings by exemplifying a preferred embodiment by exemplifying a screen device using the screen.

  FIG. 1 is a side view schematically showing a state in which a screen device 12 using a screen 10 according to an embodiment of the present invention is installed in a building 14. In the present embodiment, a screen 10 that is provided so as to be movable up and down outside the window 14a of a building 14 such as a house or a store and functions as an awning that shields sunlight from the window 14a is illustrated. The screen 10 can also be used as a roll screen that moves up and down on the indoor side of the window 14a to shield the sun, a screen door that prevents intrusion of dust and insects from the opened window 14a, and the like.

  As shown in FIG. 1, the screen device 12 includes a roll 16 capable of winding and delivering the screen 10, and a main body box 18 that houses the roll 16. The screen device 12 can cover the outside of the window 14a by pulling the screen 10 downward from the main body box 18 attached to the upper outer wall surface of the window 14a. The roll 16 is elastically biased in the rotational direction in which the screen 10 is wound up. The screen 10 pulled out from the roll 16 can be locked at its lower end using a hook 20 on a floor surface 14b such as a terrace. Thereby, since the upper end receives tension in the winding direction from the roll 16 with the lower end supported by the hook 20, the screen 10 can be stretched with sufficient tension in the vertical direction without loosening.

  2A is a schematic view of the screen 10 viewed from the one surface 10a, and FIG. 2B is a schematic view of the screen 10 viewed from the other surface 10b. As shown in FIGS. 2A and 2B, the screen 10 is a net formed by weaving warps 24 and wefts 22 in a mesh shape. In this embodiment, the configuration in which the warp yarn 24 and the weft yarn 22 are formed in different colors is illustrated, but the warp yarn 24 and the weft yarn 22 may be configured in the same color. As shown in FIG. 1, the screen 10 has one surface 10 a that is one side surface disposed on the outdoor side of the building 14, and the other surface 10 b that is the other side surface disposed on the indoor side of the building 14.

  The warp yarn 24 is a yarn extending along the winding direction and the feeding direction with respect to the roll 16. The weft yarn 22 is a yarn extending along a direction orthogonal to the warp yarn 24. That is, in the screen device 12 shown in FIG. 1, the warp yarns 24 extend in the vertical direction of the screen 10 drawn from the roll 16, and the weft yarns 22 extend in the left-right direction (width direction). In the case of this embodiment, the warp yarn 24 and the weft yarn 22 are composed of two layers of polypropylene (sheath portion) having a low melting point of about 130 (° C.) around a polypropylene (core portion) showing a high melting point of about 165 (° C.). A monofilament yarn having a core-sheath structure formed by extrusion molding is used, and the warp yarn 24 and the weft yarn 22 are fused to each other at the overlapping texture 26 and the intersection point 28 (thermal fusion). As a monofilament yarn of such a core-sheath structure polypropylene, for example, the MFR (viscosity) of the core part is 2.5 (g / 10 min) and the MFR (viscosity) of the sheath part is 7.0 (g / 10 min). A thing may be used. By using monofilament yarns, the weights of the yarns 22 and 24 can be reduced. By fusing the intersections 28 and the like, it is possible to prevent displacement of the texture 26 and the yarns 22 and 24 in the product, and to reduce the thickness of the screen 10 itself. The diameters of the warp 24 and the weft 22 are, for example, about 0.10 to 0.50 (mm). In this embodiment, the diameter of the warp 24 is 0.15 (mm), and the diameter of the weft 22 is 0.30 (mm). In FIGS. 2A and 2B, the shapes of the warp yarn 24 and the weft yarn 22 are exaggerated, but in an actual product, for example, the warp yarn 24 and the weft yarn 22 are 20 in one inch square. About 100 are provided. Further, the warp yarn 24 and the weft yarn 22 may be blended with various additives such as an ultraviolet absorber, a light stabilizer, an antioxidant, a lubricant, an antistatic agent, and a flame retardant.

  The wefts 22 may be formed of a monofilament having a single layer structure made of polypropylene having a high melting point (165 (° C.)) instead of the core-sheath structure. As a result, the mold and molding conditions for the weft 22 can be simplified, the number of extruders can be reduced to one, and the manufacturing cost can be greatly reduced. In addition, when the weft 22 has a single-layer structure, the cost can be further reduced because an expensive low melting point (130 (° C.)) polypropylene is not used.

  As shown in FIG. 2A, on one surface 10a, the warp yarns 24 are arranged on the back side of the weft yarns 22 except for the weaves 26, and the weft yarns 22 are woven with the warp yarns 24 across the four warp yarns 24. Yes. That is, the weaves 26 are arranged along the longitudinal direction of the weft yarns 22, and the intervals are four warp yarns 24. For this reason, on one side 10 a, the exposure rate (surface area) of the weft yarn 22 is larger than the exposure rate of the warp yarn 24. In particular, in this embodiment, the weft 22 is thicker than the warp 24. As a result, on one surface 10a, the exposure ratio of the weft 22 is set to be about 70% with respect to the exposed areas of the warp 24 and the weft 22.

  As shown in FIG. 2B, on the other surface 10b, the weft 22 is arranged on the back side of the warp 24 except for the weave 26, and the warp 24 is woven with the weft 22 in a state of straddling the four wefts 22. ing. That is, the weaves 26 are arranged along the longitudinal direction of the warp yarns 24, and the intervals are four weft yarns 22. For this reason, on the other surface 10b, the exposure rate (surface area) of the warp yarn 24 is larger than the exposure rate on the one surface 10a. For example, the exposure rate of the warp yarn 24 is 50% of the exposed area of the warp yarn 24 and the weft yarn 22. It is set to be about.

  The number of the wefts 22 straddling the warp yarns 24 on one side 10a may be two or more depending on the weaving method called twill weave or satin weave. However, if too much, the arrangement interval of the weaves 26 becomes too long and melts. There is a concern that the warp yarns 24 and the weft yarns 22 may be displaced before the attaching process. Therefore, the weft 22 preferably has, for example, a configuration in which the warp yarns 24 are straddled every 3 to 5, and particularly preferably has a configuration in which the warp yarns 24 are straddled every four as described above. The same applies to the number of warps 24 straddling the wefts 22 on the other surface 10b.

  Thus, in the screen 10, the weft 22 straddles a plurality of warps 24 on one surface 10a, and the warp 24 straddles a plurality of wefts 22 on the other surface 10b. For this reason, the weaves 26 do not continue in the longitudinal direction of the warp yarns 24 between the adjacent wefts 22, 22, and the laminated thickness when wound on the roll 16 is reduced. In particular, in the case of the present embodiment, the weave 26 of the weft 22 and the warp 24 is displaced in the longitudinal direction of the weft 22 between the adjacent wefts 22, 22. It is shifted in order of 24. Therefore, as shown in FIGS. 2 (A) and 2 (B), the textures 26 are regularly arranged obliquely, and if the textures 26 overlap between the layers that overlap when wound on the roll 16. Therefore, the stacking thickness is further reduced because the position is shifted sequentially in the longitudinal direction of the wefts 22. Thus, the effect which can reduce lamination | stacking thickness is not restricted to the screen apparatus 12 and roll type screen door of a roll structure as shown in FIG. In other words, even if the screen door has a general structure that fixes the screen to the frame, the screen is wound and stored and transported at the time of manufacture. Is effective.

  As described above, in the screen 10, the warp yarns 24 and the weft yarns 22 are formed in different colors, and are colored by, for example, dyeing or dressing. Specifically, the warp yarn 24 and the weft yarn 22 have a color difference of a level at which the color difference can be discriminated with the naked eye, for example, the color difference ΔE is 3 or more, preferably about 4 to 15 in the (L * a * b color system). Have. In the screen 10 of the present embodiment, the color of the weft 22 whose exposure rate is increased on the one surface 10a on the outdoor side is set to a higher brightness than the color of the warp yarn 24 whose exposure rate is increased on the other surface 10b on the indoor side. For example, the warp yarn 24 is black, and the weft yarn 22 is any color such as gray, ride gray, cream, beige, green, brown or the like. As a result, one surface 10a is a bright color with a strong weft 22 color, and the other surface 10b is a dark dark color with a strong warp 24 color.

  Therefore, the screen 10 can be configured in different colors without coloring the one surface 10a and the other surface 10b with the coating agent. For this reason, the screen 10 can ensure high product quality by preventing quality changes such as color change and dirt adhesion due to oil contained in the coating agent, and can also reduce costs by omitting the coloring process and not using the coating agent. It becomes. Moreover, as shown in FIG. 1, the screen device 12 using the screen 10 has not only the appearance quality improved on the one surface 10a having a bright color, but also can efficiently reflect sunlight from the outdoors and can also shield the room. The other surface 10b with improved blinding performance and a dark color has a structure in which the reflection of light to the indoor side is suppressed and the outdoor side can be easily seen, and the same effect can be expected when the screen 10 is used as a screen door.

  In the screen 10, the warp yarns 24 along the winding direction of the rolls 16 are made of yarns thinner than the weft yarns 22. For this reason, the stacking thickness when wound on the roll 16 is further reduced, and the winding force on the roll 16 is reduced to make the winding itself smooth. In addition, the screen 10 is composed of wefts 22 that are orthogonal to the feeding direction from the roll 16 and extend in the left-right direction to which no tension is applied from the roll 16, and are thicker than the warp 24. For this reason, the tension (rigidity) of the weft 22 itself can be sufficiently secured, and not only in the vertical direction along the warp 24 but also in the horizontal direction along the weft 22 as shown in FIG. it can.

  The screen 10 has, for example, a surface in which the core-sheath warp 24 having a diameter of 0.15 (mm) is 78 (lines / inch) and a weft having a core-sheath structure or a single-layer structure having a diameter of 0.30 (mm). It has a two-sided structure with a surface where 22 is 78 (lines / inch) and has high shielding performance.

  By the way, in the screen 10 of the present embodiment, the weft 22 is thicker than the warp 24, so that the gap C1 between the adjacent wefts 22 and 22 tends to be larger than the gap C2 between the adjacent warps 24 and 24. is there. Therefore, in order to prevent the wide gap C1 from deteriorating the shielding performance, the screen 10 may be configured by adding another weft (auxiliary weft 30) to the gap C1.

  3A is a schematic view of the screen 10 with the auxiliary weft 30 provided as viewed from one side 10a, and FIG. 3B shows the screen 10 with the auxiliary weft 30 provided from the other side 10b. It is the seen schematic diagram. FIG. 4 is a schematic diagram of a cross-sectional shape obtained by cutting the screen 10 shown in FIG. 3 in a direction perpendicular to the longitudinal direction of the warp 24. 3 and 4, the same reference numerals as the reference numerals of the screen 10 shown in FIGS. 1 and 2 indicate the same or similar configurations, and thus the same or similar functions and effects are provided. The detailed description is omitted as being performed, and the same applies to the screen 10 shown in FIG.

  As shown in FIGS. 3A and 3B, the auxiliary weft 30 extends in parallel with the weft 22, and is arranged so as to fill the gap C1 between the wefts 22,22. For example, the auxiliary weft 30 is disposed on the back side of the warp 24 when viewed from one side 10 a, and is woven with the warp 24 in a state where a plurality of (four in FIG. 3) warps 24 are straddled in the same manner as the weft 22. . That is, the wefts 32 of the auxiliary wefts 30 and the warp yarns 24 are arranged along the longitudinal direction of the auxiliary weft yarns 30, and the distance between them is four warp yarns 24. The interval between the textures 32 may be changed in the same manner as in the case of the texture 26 described above.

  In the case of this embodiment, the auxiliary weft 30 is the same as the warp 24, that is, the same shape and the same color as the warp 24. That is, the auxiliary weft 30 is a monofilament yarn of polypropylene having a core-sheath structure with a diameter of 0.15 (mm), for example. The auxiliary weft 30 may have a shape different from that of the warp 24 and a different color. However, since the auxiliary weft 30 is for closing the gap C1 and improving the shielding performance of the screen 10, black which is the same color as the warp 24 or an equivalent color which appears to be substantially the same color, for example, dark gray, is preferable. In addition, since the auxiliary weft 30 only fills the gap C1, it hardly affects the color on the one surface 10a.

  The auxiliary weft 30 closes the gap C1 and constructs a sandwich structure in which the warp yarn 24 is sandwiched between the auxiliary weft yarn 22 as shown in FIG. For this reason, by providing the auxiliary weft 30 in the screen 10, the effect that the warp yarn 24 and the weft yarn 22 can be more reliably prevented from being displaced before the fusion process is also obtained. Further, in the screen 10 of this configuration example, for example, a surface having a core-sheath structure having a diameter of 0.15 (mm) and having a warp 24 of 78 (lines / inch) and a core-sheath structure having a diameter of 0.30 (mm) or a single core. It has a three-sided structure with a layer structure of weft yarn 22 having 78 (lines / inch) and a core-sheath structure auxiliary weft 30 with a diameter of 0.15 (mm) having a surface of 78 (lines / inch). High shielding performance.

  Since the auxiliary weft 30 is fused to the warp yarn 24 at the intersection 33 with the weave 32 and the warp yarn 24 in the fusion process, there is no position shift at the product stage. Since the weft 22 of this embodiment is considerably thicker than the warp 24, the fusion strength with the warp 24 tends to be weaker than the fusion strength of the same diameter. In this regard, in this configuration example, the auxiliary weft 30 and the warp 24 having the same diameter are firmly fused, and the auxiliary weft 30 is intricately entangled with the weft 22, so that occurrence of misalignment can be prevented more reliably. .

  As shown in FIG. 5, the screen 10 may have a configuration in which another weft (auxiliary weft 34) is added instead of the auxiliary weft 30 shown in FIG. 3 or in combination with the auxiliary weft 30. For example, the auxiliary weft 34 is arranged on the front side of the weft 22 (and the warp 24) when viewed from the other surface 10b, that is, the back side of the weft 22 (and the warp 24) when viewed from the one surface 10a. In addition, a plurality of (four in FIG. 5) warp yarns 24 are woven with warp yarns 24. For this reason, the wefts 36 of the auxiliary wefts 34 and the warp yarns 24 are arranged along the longitudinal direction of the auxiliary wefts 34, and the distance between them is four warp yarns 24. The interval between the textures 36 may be changed in the same manner as the textures 26 and 32 described above.

  In the case of the present embodiment, the auxiliary weft 34 is the same as the warp 24, that is, the same shape and color as the warp 24. That is, the auxiliary weft 34 is a polypropylene monofilament yarn having a core-sheath structure with a diameter of 0.15 (mm), for example. The auxiliary weft 34 may have a shape different from that of the warp 24 and a different color, but black which is the same color as the warp 24 or an equivalent color which appears to be substantially the same color, for example, dark gray, is preferable. Accordingly, in the screen 10, the auxiliary weft 34 hides the exposure of the weft 22 on the other surface 10b and at the same time increases the exposure ratio of the same color as the warp 24, so that reflection of light to the indoor side on the other surface 10b is further suppressed. It is done. In the configuration example shown in FIG. 5, for example, the exposure ratio of the warp 24 and the auxiliary weft 34 is set to be about 70% with respect to the exposed area of the warp 24, the weft 22, and the auxiliary weft 34 on the other surface 10 b. . Of course, even in the case of the configuration using the auxiliary weft 34, a sandwich structure in which the warp 24 is sandwiched between the weft 22 is constructed, as in the case of the auxiliary weft 30 shown in FIG. It is also possible to obtain the effect of more reliably preventing the displacement of the position. Since the auxiliary weft 34 is fused to the warp 24 at the intersection 37 with the weave 36 and the warp 24 in the fusing process, occurrence of misalignment can be prevented as in the case of the auxiliary weft 30 described above.

  When the screen 10 as described above is used as an awning as shown in FIG. 1, the ratio (opening ratio) of the area of the opening penetrating the one surface 10a and the other surface 10b to the unit surface area of the screen 10 is, for example, 5 It is set to about 15%. Therefore, when constructing this opening ratio of 5 to 15% with the warp yarns 24 having a diameter of 0.15 (mm) and the weft yarns 22 having a diameter of 0.30 (mm), the warp yarns 24 are about 50 to 90 per square inch. The weft 22 is preferably woven by providing about 20 to 70 wefts in one inch square. In a similar manner, when the screen 10 is used as a screen door, the opening ratio is set to, for example, about 60 to 80%, and the warp yarns 24 and the weft yarns 22 may be woven at a number and interval that can ensure the opening ratio.

  The screen according to the present invention is a screen formed by weaving warps and wefts and wound in a roll shape. On one side, the wefts are woven in a state of straddling a plurality of warps, and the other side Then, the warp is woven in a state of straddling a plurality of the wefts. According to such a configuration, since the texture is displaced between adjacent wefts, it is possible to prevent the texture from overlapping between the layers to be laminated when wound in a roll shape, and to reduce the lamination thickness.

  In the screen according to the present invention, the screen may be wound in a roll shape along the longitudinal direction of the warp, and the diameter of the weft may be larger than the diameter of the warp. As a result, the warp along the winding direction is made of a thread thinner than the weft, which further reduces the thickness of the laminated layer when it is wound into a roll, and reduces the winding force so that the winding itself is smooth. It becomes. Moreover, since the wefts perpendicular to the winding direction are composed of thick yarns, when the screen is opened in a flat shape, the tension along the left-right width direction can be secured by the rigidity of the wefts themselves, so that they loosen or bend in the left-right direction. Can be stretched.

  In the screen according to the present invention, the one surface may be configured such that the wefts of the wefts and the warps are displaced in the longitudinal direction of the wefts between the adjacent wefts. If it does so, it can prevent more reliably that a texture overlaps between the layers laminated when winding up in roll shape, and can reduce lamination thickness still more reliably.

  In the screen according to the present invention, the weft may straddle four or more warps on the one surface, and the warp may straddle four or more wefts on the other surface. If it does so, it can prevent more reliably that a texture overlaps between the layers laminated | stacked when winding up in roll shape, and can further reduce lamination thickness.

  In the screen according to the present invention, the diameter of the weft is configured to be larger than the diameter of the warp, and an auxiliary weft having a diameter smaller than the weft is provided between the adjacent wefts, and the auxiliary weft is fused with the warp. It may be a worn configuration. If it does so, the clearance gap between wefts can be hidden with an auxiliary weft, the shielding performance of the said screen can be improved, and generation | occurrence | production of misalignment can be suppressed further.

  In the screen according to the present invention, the warp may be a two-layered yarn having a sheath around the core, and the weft may be a single-layered yarn. If it does so, the manufacturing cost of a weft and the said screen can be reduced.

  A screen device according to the present invention includes the screen having the above-described configuration and a roll capable of winding and feeding the screen. According to such a configuration, it is possible to reduce the laminated thickness of the screen when wound with a roll, and it is possible to reduce the size of the apparatus.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be freely changed without departing from the gist of the present invention.

  For example, in the above embodiment, the weft 22 exposure ratio is increased on the one surface 10a arranged on the outdoor side of the building 14, and the warp yarn 24 exposure ratio is increased on the other surface 10b. The exposure ratio may be increased to increase the exposure ratio of the warp 24 on one side 10a, and the exposure ratio of the warp 24 may be larger than the exposure ratio of the weft 22 on the other side 10b. The warp yarn 24 may be set to a lighter color than the weft yarn 22.

  10 screen, 10a one side, 10b other side, 12 screen device, 14 building, 14a window, 14b floor surface, 16 rolls, 18 body box, 22 weft, 24 warp, 26, 32, 36 texture, 28, 33, 37 Intersection, 30, 34 Auxiliary weft

Claims (7)

A screen formed by weaving warps and wefts, wound in a roll,
In one aspect, the weft is woven in a state of straddling a plurality of warps,
In another aspect, the screen is woven with the warp straddling a plurality of the wefts. The screen of claim 1,
The screen is wound in a roll shape along the longitudinal direction of the warp,
The screen characterized in that the diameter of the weft is larger than the diameter of the warp. The screen according to claim 1 or 2,
The screen according to claim 1, wherein the weft and warp weaves are displaced in the longitudinal direction of the wefts between the adjacent wefts. In the screen of any one of Claims 1-3,
In the one surface, the weft straddles four or more warps,
In the other surface, the warp straddles four or more of the wefts. In the screen of any one of Claims 1-4,
The diameter of the weft is larger than the diameter of the warp,
Between adjacent wefts, auxiliary wefts having a smaller diameter than the wefts,
The screen, wherein the auxiliary weft is fused to the warp. In the screen of any one of Claims 1-5,
The warp is a two-layered yarn having a sheath around the core,
The weft is a screen having a single layer structure.   A screen device comprising: the screen according to claim 1; and a roll capable of winding and delivering the screen.

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